“When I saw the new £5 note, I thought, ‘Wouldn’t it be good if I could engrave something on it.

“I didn’t know what at first, but then I found out that next year is going to be the 200th anniversary of Jane Austen’s death and her image is also going to be on the new £10 note, which is coming out next year, so it ties in quite nicely with that.

“The beauty of this is that in the right light you can’t see the engraving at all, but when you turn the note and the light comes at a different angle, it appears.

“I’ve no idea how much they will be worth if people try to sell them. But previous pieces I have worked on have been insured for more than £50,000.

“If somebody finds one I hope they will maybe put it on eBay. If they can get some extra money for Christmas I’ll be thrilled.”

The four notes will all be distributed across areas of England, Wales, Scotland and Northern Ireland by Thursday (8/12).

One fiver has already been used at a cafe in Scotland while another is destined for a pub in Northern Ireland.

Graham said he may spend the other two in either Warwickshire or Gloucestershire today (Wed) before he puts the final one into circulation in south Wales.

He added: “I’ll probably just buy a coffee somewhere and hopefully it will find its way to somebody.

“We just wanted to spread them as far as possible and give people across the UK the chance of getting hold of one.”

A fifth engraved note will be donated to the Jane Austen Society to mark the 200th anniversary of the classic novelists death next year.